The St. John plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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71° on Nov. 11, 2020, the hottest reading for this week of the year since 1893. Next is 65° in 2002.
St. John’s center stands about 1,420 ft above sea level. Within three miles the land runs from 810 ft to 1,600 ft, a difference of 790 ft: hilly country. The highest named summit within 15 miles is McLean Mountain, about 1,940 ft, 6 miles west-southwest.
Under the town center the state geologic map shows Devonian Seboomook Formation (mudstone, sandstone), from the Early Devonian, 410 to 414 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 15×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mudstone, sandstone. Age: Early Devonian, 410 to 414 million years old. About 19 mi of the line.
Mudstone. Age: Devonian, 359 to 422 million years old. About 5 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in St. John reaches the Bay of Fundy and the Atlantic Ocean by way of Carter Brook, the Wallagrass Stream, the Fish and the Saint John: about 290 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of St. John; river miles along the main stem, rounded.
St. John has a warm-summer humid continental climate. Summer afternoons average 76° in July; winter nights fall to about −3° in January. A normal year brings about 99 inches of snow; with the rain, that comes to about 42 inches of water.
On November 14 St. John normally reaches 39° and falls to 23°. The record high is 58°, in 1951; the record low 0°, in 2019. The most rain on this date, 1.18 in, fell in 2003.
Normals 1991–2020 and records since 1893 at Fort Kent, 8 miles northeast, 810 ft lower. NOAA, through RCC-ACIS.
